“We’ve recently heard from many loyal Apple customers who were disappointed to learn that we had removed our products from the EPEAT rating system. I recognize that this was a mistake. Starting today, all eligible Apple products are back on EPEAT,” Bob Mansfield, Apple’s senior vice president of hardware engineering, said in a letter to customers posted online Friday.

Many large purchasers require EPEAT certification in order to buy computer products. San Francisco moved to stop purchases of Apple
/quotes/zigman/68270/quotes/nls/aaplAAPL computers after the company withdrew from EPEAT certification earlier this month. The University of California at Berkeley and Cornell University had also reportedly begun to review purchases of Apple products.

Of course, the key phrase remains “all eligible Apple products.” The initial decision to withdraw reportedly came because of changes in the way batteries are attached in newer laptops.

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